Half-slip



FIG. 1 is a front elevational view of a half-slip showing my new design;

FIG. 2 is an elevational view of the half-slip as it appear when rotated 30° from the position of FIG. 1; and

FIG. 3 is a back elevational view of the half-slip of FIG. 1. 

The ornamental design for half-slip, as shown and described. 